Change projection property in sources options to optional

The `projection` property is not mandatory, the view's projection is used if not provided.

src/ol/source/ImageWMS.js

@@ -40,7 +40,7 @@ const GETFEATUREINFO_IMAGE_SIZE = [101, 101];
  * At least a `LAYERS` param is required. `STYLES` is
  * `''` by default. `VERSION` is `1.3.0` by default. `WIDTH`, `HEIGHT`, `BBOX`
  * and `CRS` (`SRS` for WMS version < 1.3.0) will be set dynamically.
- * @property {import("../proj.js").ProjectionLike} projection Projection.
+ * @property {import("../proj.js").ProjectionLike} [projection] Projection. Default is the view projection.
  * @property {number} [ratio=1.5] Ratio. `1` means image requests are the size of the map viewport, `2` means
  * twice the width and height of the map viewport, and so on. Must be `1` or
  * higher.

src/ol/source/Source.js

@@ -31,7 +31,7 @@ import SourceState from './State.js';
  * @typedef {Object} Options
  * @property {AttributionLike} [attributions]
  * @property {boolean} [attributionsCollapsible=true] Attributions are collapsible.
- * @property {import("../proj.js").ProjectionLike} projection
+ * @property {import("../proj.js").ProjectionLike} [projection] Projection. Default is the view projection.
  * @property {SourceState} [state='ready']
  * @property {boolean} [wrapX=false]
  */

src/ol/source/TileArcGISRest.js

@@ -29,7 +29,7 @@ import {appendParams} from '../uri.js';
  * If this is not defined, a default grid will be used: if there is a projection
  * extent, the grid will be based on that; if not, a grid based on a global
  * extent with origin at 0,0 will be used.
- * @property {import("../proj.js").ProjectionLike} projection Projection.
+ * @property {import("../proj.js").ProjectionLike} [projection] Projection. Default is the view projection.
  * @property {number} [reprojectionErrorThreshold=0.5] Maximum allowed reprojection error (in pixels).
  * Higher values can increase reprojection performance, but decrease precision.
  * @property {import("../Tile.js").LoadFunction} [tileLoadFunction] Optional function to load a tile given a URL.

src/ol/source/TileImage.js

@@ -23,7 +23,7 @@ import {getForProjection as getTileGridForProjection} from '../tilegrid.js';
  * you must provide a `crossOrigin` value if you want to access pixel data with the Canvas renderer.
  * See https://developer.mozilla.org/en-US/docs/Web/HTML/CORS_enabled_image for more detail.
  * @property {boolean} [opaque=true] Whether the layer is opaque.
- * @property {import("../proj.js").ProjectionLike} projection Projection.
+ * @property {import("../proj.js").ProjectionLike} [projection] Projection. Default is the view projection.
  * @property {number} [reprojectionErrorThreshold=0.5] Maximum allowed reprojection error (in pixels).
  * Higher values can increase reprojection performance, but decrease precision.
  * @property {import("./State.js").default} [state] Source state.

src/ol/source/TileWMS.js

@@ -39,7 +39,7 @@ import {appendParams} from '../uri.js';
  * this. See http://mapserver.org/output/tile_mode.html.
  * @property {boolean} [hidpi=true] Use the `ol/Map#pixelRatio` value when requesting
  * the image from the remote server.
- * @property {import("../proj.js").ProjectionLike} projection Projection.
+ * @property {import("../proj.js").ProjectionLike} [projection] Projection. Default is the view projection.
  * @property {number} [reprojectionErrorThreshold=0.5] Maximum allowed reprojection error (in pixels).
  * Higher values can increase reprojection performance, but decrease precision.
  * @property {typeof import("../ImageTile.js").default} [tileClass] Class used to instantiate image tiles.

src/ol/source/VectorTile.js

@@ -20,7 +20,7 @@ import {createXYZ, extentFromProjection, createForProjection} from '../tilegrid.
  * to `false` (e.g. for sources with polygons that represent administrative
  * boundaries or TopoJSON sources) allows the renderer to optimise fill and
  * stroke operations.
- * @property {import("../proj.js").ProjectionLike} projection Projection.
+ * @property {import("../proj.js").ProjectionLike} [projection] Projection. Default is the view projection.
  * @property {import("./State.js").default} [state] Source state.
  * @property {typeof import("../VectorTile.js").default} [tileClass] Class used to instantiate image tiles.
  * Default is {@link module:ol/VectorTile}.

src/ol/source/WMTS.js

@@ -20,7 +20,7 @@ import {appendParams} from '../uri.js';
  * you must provide a `crossOrigin` value if you want to access pixel data with the Canvas renderer.
  * See https://developer.mozilla.org/en-US/docs/Web/HTML/CORS_enabled_image for more detail.
  * @property {import("../tilegrid/WMTS.js").default} tileGrid Tile grid.
- * @property {import("../proj.js").ProjectionLike} projection Projection.
+ * @property {import("../proj.js").ProjectionLike} [projection] Projection. Default is the view projection.
  * @property {number} [reprojectionErrorThreshold=0.5] Maximum allowed reprojection error (in pixels).
  * Higher values can increase reprojection performance, but decrease precision.
  * @property {import("./WMTSRequestEncoding.js").default|string} [requestEncoding='KVP'] Request encoding.